SFORODESMIUM. 425 



Distinguished by the somewhat large, subsessile conidia 

 being murifurmly septate, i.e., having both transverse and 

 vertical septa. 



Sporodesmium melanopodum. B. & Br. 



Tufts ample, black ; conidia subglobose, opaque, multi- 

 sejDtate, springing from a cellular base of variable size. 



Sporodesmium melanopodum, B. & Br., Ann. Nat. Hist., 

 n. 455 ; Sacc, SylL, iv. n. 2356. 



On bark. 



Sporodesmium. lobatum. B. & Br. (fig. 7, p. 397.) 

 Tufts minute, black, pulvinate ; conidiophores short, arti- 

 culated, hyaline below, broken up into subquaternate, sub- 

 globose joints above ; conidia terminal, 15 yu. long. 



Sporodesmium lobatum, B. & Br., Ann. Nat. Hist., n. 1146, 

 t. iii. f. 7 ; Sacc, SylL, iv. n. 2364. 

 On pine wood. 



Sporodesmium. scutellare. B. & Br. 



Tufts small, scattered, minute, shield-like ; conidia broadly 

 obovate, muriformly septate, brown, pedicel short, one or few- 

 celled. 



Sporodesmium scutellare, B. & Br., Ann. Nat. Hist, n. 456 ; 

 Sacc, SylL, iv. n. 2366. 



On larch bark. 



Sporodesmium. antiquum. Corda. 



Tufts black, minutely downy, often effused; irregularly 

 cylindrical and sometimes slightly wavy, 100-150 X 20 /x 

 muriformly septate, and broken up into numerous small 

 cells, smoky brown, base narrowed into a minute stem, 

 somewhat fasciculate. 



Sporodesmium antiquum, Corda, Icon. Fung., iii. f. 11; 

 Sacc, SylL, iv. n. 2368. 



On trunks, wood, &c. 



Var. compactum, B. & Br., Ann. Nat. Hist., n. 453. 



Our species agrees in general character with Corda's, of 

 which we have a specimen from the author, but it is more 

 compact and composed of smaller cells (B. & Br.) 



On hard wood. 



